It is pointless to speculate on such things. This show does not function based on any discernible logic. Things just happen and they're connected to each other only on emotional level, not on logical one. Stuff may be established in a previous episode, or indeed earlier in the same one, but then another thing need to happen later, so it does, regardless of if it contradicts what was said or seen earlier.
I'm always impressed when fans are willing to put way more thought into the writing than the writers were.